In this update: Prime Minister Tony Abbott says his office is being updated hourly on the search for flight MH370; UN report on climate change warns of the threat to the Great Barrier Reef; Tony Abbott and Bill Shorten campaign in WA ahead of the re-run of the Senate election.

A major Southern Philippines separatist group has vowed to end four decades of armed struggle with the signing of a peace accord with the country's government. Zoe Daniel speaks with Irene Morada Santiago from the Mindanao Commission on Women, who played a vital role in persuading both sides to go to the negotiating table.

Negotiations on the reform of the electoral system in Cambodia have all but collapsed, leading the opposition to plan new mass rallies. Zoe Daniel speaks with Cambodian Information Minister Khieu Kanharith.

The Greens are urging another rethink of South Australia's electoral donation laws because a major land developer is hosting an election fundraiser for Liberal leader Steven Marshall.

Mr Marshall has rejected any suggestion Liberal Party policies can be influenced by donations.

For four years the people of Roseworthy, north of Adelaide, have been waiting for the SA Government to decide on a housing development plan for the area, a decision the Liberals now are promising to fast-track if they win the election.

Labor has retained former prime minister Kevin Rudd's old seat of Griffith, with voters electing candidate Terri Butler despite a swing away from the ALP. She thanked voters and supporters who joined the celebrations at the ALP headquarters.